DE2849318A1 - DEVICE FOR FLASHING BALLPOINT POINT POINTS - Google Patents

Description

- 3 - .19.154 / 5 40 / kr

ALBE S.A., 6982 Agno, Switzerland

Device for flanging ballpoint pen tips

The present invention relates to a device for flanging ballpoint pen tips, in particular those made of hard metal, with three conical ones arranged at an angle of 120 ° to each other and rolling on a conical seat without sliding friction Rollers, characterized in that the apex of the conical seat is on the side on which the to be crimped is located so that the seat of the to be crimped Tip diverges from seen in the direction of the drive spindle.

Advantageous refinements are given in the subclaims.

Further advantages, features and details of the invention emerge from the following with reference to the accompanying drawings Description of several exemplary embodiments. In the drawing illustrating the invention:

Figure 1 seen from below the claimed device in plan, so seen from the side of to beading tip,

Figure 2 is an axial section through a first embodiment

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form, with only one role shown
is,

Figure 3 is an axial section through another

Embodiment with three conical rollers on the pointed conical end
one non-rotating, with the spindle
exert a counter pressure on the coaxial rod,

Figure 4 schematically shows the oscillation angle of the three rollers for better adaptation to the
tip to be beaded,

FIG. 5 shows an axial section through the embodiment of FIG. 3 with a built-in electric motor for a direct drive,

FIG. 6 shows, on a larger scale, the end section of the device according to FIG. 3, the seat and one of the three conical rollers are shown,

FIG. 7 shows, on a larger scale, the end section of the device according to FIG. 5, the seat and one of the three conical rollers being shown .

Reference is first made to FIGS. 1 and 2. The axes of the three conical rollers 1, 2, 3 intersect at a point 0, which lies on the side on which the tip to be crimped, denoted by and 5, is located.

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The rollers roll without sliding friction on the conical seat COD (fig 2) from, as well as at the edge of the tip to be crimped 4. The conical surface COD therefore widens from the tip to be crimped 4-5 from in the direction of the shaft 8, which is of the (not shown) The spindle of the machine to which the device is connected is detected.

The three conical rollers 1, 2, 3 of which only one is shown in FIG. 2 have conical surfaces 1 'which press on the edge of the tip 4 to be crimped, while surfaces 1 "and 1"''press on the conical seat COD and the end faces 1 " ¹ press onto the disc 6 held by the ball or roller bearings 7, where they find the required counter pressure, as can be seen from the drawing.

As can be clearly seen from FIG. 2, the conical seat COD, which receives the three rollers, is very wide and easier to manufacture than that which results from the use of conical rollers with converging axes, as disclosed in the February 2, 1977 of Swiss patent application 605 167 filed by the same applicant (corresponds to German patent application P 27 58 967.9) is described.

In the embodiment according to Figure 3, the three press conical Rollers, of which only one is shown and denoted by 1, against the tapered end 9 'of a non-rotating, but Rod 9 pushed down axially by spring 10 (see also FIG. 6).

In this case, the entire outer part 11, which serves as a seat for the three rollers 1, 2, 3, rotates, while the inner, tapered one Rod 9 is fixed. Under these conditions, the three rollers rotate, i.e. they are already in rolling friction with respect to the

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conical tip 9 ¹ when they come into contact with the edge of the tip to be flanged.

When the three conical rollers 1, 2, 3 with the tip to be flanged come into contact, they are already moving under exclusive conditions Rolling friction continues, and therefore there is no relative speed between the surface of the tip to be crimped and the Roles available.

^{In other words, the point A located in the middle of the fixed surface 9 1} having the relative speed zero (FIG. 6) and point B located in the middle of the surface 1 'performing the flanging, since they start on the same one from 0 Radial ray OA lie, also the relative speed zero, so that the surface 1 'rolls around the surface of the tip to be crimped without sliding friction.

In order to better adapt the three rollers 1, 2, 3 in relation to the tip 4 to be flanged, it is provided that the seat 11, which the Wears rollers, can execute a pivoting movement within a certain angle, as shown in FIG.

In Figure 5, a modified embodiment of Figure 3 is shown, in which the conical seat carrying the three rollers is set in rotation by the rotor 12 of an electric motor, its stator 13 is surrounded by an outer jacket 14 that covers the entire mechanism surrounds, so that it turns out to be very compact and a flanging at very high speed with the help of the electric motor is possible.

In FIG. 7, on a larger scale, the end section used for flanging is shown of the device illustrated for greater clarity.

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The rollers 1, 2, 3 and the conical seat in which they are without sliding friction roll, are preferably made of very hard steel alloys or hard metal, so that also ballpoint pen tips made of very hard metal, e.g. stainless steel, can be flanged.

The device in question contains three conical flanging rollers made of very hard material, the axes of which converge at an intersection point 0, which lies outside the device, namely on the side on which the tip to be crimped is located. This enables an expansion of the cavity in which the rollers are located and an enlarged version of the rollers than in the case where the axes of the rollers diverge (diverge). A great deal of pressure or force can also be exerted on the tip to be crimped, which is made of a very hard material can, e.g. made of stainless steel.

The rollers press against a rotating disc 6 (Figure 2) or against a conical tip 9 '(Figure 3) which is part of a rod 9 represents, on which the pressure of a spring 10 lies in the axial direction.

In this case, the speed or rotational speed of the rollers can be selected to be very high, so that production is increased.

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Read 11 e

Claims (7)

Expectations [1. {Device for flanging ballpoint pen tips, insbesonde- '"- ■ -' re those made of hard metal with three rollers arranged at an angle of 120 to one another, which roll on a conical seat without sliding friction, characterized in that the tip (O) of the conical seat (COD) lies on the side on which the tip to be crimped is located, so that the seat diverges in the direction of the spindle when viewed from the tip to be crimped. 2. Device according to claim 1, characterized in that the three conical rollers apply a counter pressure during the flanging exercise a washer (6) connected to the conical seat (COD) by means of a ball or roller bearing (7) is connected. 3. Device according to claims 1 and 2, characterized in that each roller (Figure 2) has a conical end surface (1 ¹ ) which presses on the edge of the tip to be flanged, further two conical intermediate surfaces (1 "and 1"" ) which press on the seat (COD) of the device and a conical end face (1 "') which presses against the disc (6), thereby exerting the counter-pressure during the crimping. 909822 / 0B91 4. The device according to claim 1, characterized in that the conical rollers ^{exert a counter-pressure on the pointed, conical end (9 1} ) of a non-rotating rod (9) coaxial with the spindle, which in the axial direction with the pressure of elastic organs ( 10) is applied. 5. Device according to one of claims 1 to 4, characterized in that that the conical seat (COD) is set in rotation by the spindle (8), whereby it is within a certain angle can oscillate in order to enable the perfect adaptation of the conical rollers (1, 2, 3) to the tip to be flanged. 6. The device according to claim 5, characterized in that the spindle (8) of the rotor (12) is built into the device Electric motor is set in rotation, the stator (13) forms the outer jacket of the device. 7. Device according to one of claims 1 to 6, characterized in that the rollers (1, 2, 3) and the seat (COD) are made of very hard steel alloys or of hard metal. 909822/0591